热处理对马氏体沉淀硬化不锈钢0Cr15Ni5Cu3Nb锻件机械性能的影响  

Effect of Heat Treatment on Mechanical Properties of Martensite Precipitation-Hardening Stainless Steel 0Cr15Ni5Cu3Nb Forgings

作　　者：陈斌[1] 宋志刚[1] 郑文杰[1] 

机构地区：[1]钢铁研究总院,北京100081

出　　处：《特殊钢》2004年第1期24-26,共3页Special Steel

摘　　要：试验研究了马氏体沉淀硬化不锈钢 0Cr15Ni5Cu3Nb(0 0 3%C ,14 4 %Cr,4 6 %Ni,3 6 %Cu ,0 2 4 %Nb)大规格Φ16 2 0 /Φ12 2 8× 2 5 4和小规格Φ90 0 /Φ75 0× 171两种锻件淬火 回火处理工艺对机械性能的影响。结果表明 ,10 4 0℃油淬和 5 5 0℃ 4h回火处理小规格锻件的冲击韧性AKV为 86J ,大规格锻件仅为 4 9J ;同时 ,小规格锻件经 10 4 0℃水淬和 5 5 0℃ 4h回火后的冲击韧性AKV提高到 175J ,且强度和塑性均满足标准要求。The effect of quenching-tempering process on mechanical properties of large-size range Φ1 620/Φ1 228×254 and small-size range Φ900/Φ750×171 forgings of martensite precipitation-hardening stainless steel 0Cr15Ni5Cu3Nb (0.03C, 14.4Cr, 4.6Ni, 3.6Cu, 0.24Nb) has been tested and studied. It was obtained that the impact toughness A KV of small-size range forgings treated by 1 040 ℃ oil quenched and 550 ℃ for 4 h tempered was 86 J, while that of large-size range forgings was only 49 J, and as treated by 1 040 ℃ water quenched and 550 ℃ for 4h tempered, the impact toughness A KV of small-size forgings increased to 175 J, of which the strength and plasticity were up to standard requirements.

关 键 词：热处理 马氏体沉淀硬化不锈钢 0Cr15Ni5Cu3Nb 锻件 淬火 回火 冲击韧性 机械性能 

分 类 号：TG156[金属学及工艺—热处理]